At the beginning of a game, you put 6 of these face down. Each time you knock out the opponent's Pokemon, you get to pick up 1 of these. Pick up all 6 and you win.
I think that he asked if he can flip any coin, like a quarter, a dollar, etc. I'm pretty sure that it can be any that isn't two-headed, though I would use a nickel because I'm tightwad